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About

South Nassau Dermatology is a private dermatology practice with 6 offices in New York (including Levittown and Long Beach). Founded in 1978 and based in Oceanside, NY, it employs about 12 staff and staffs 10 board-certified physicians. The clinic offers medical, surgical, and cosmetic dermatology services, including Mohs surgery, skin cancer treatment, Botox, Juvederm, laser hair removal, and other laser/aesthetic treatments. Notable details: - Services: Mohs surgery, skin cancer treatment, cosmetic dermatology (Botox, Juvederm, laser treatments) - Locations: Levittown and Long Beach, NY (plus Oceanside area; multiple offices in the region) - Website: snderm.com - Contact: Multiple listed phone numbers for the practice If you’re specifically looking for a dermatologist in Levittown or Long Beach, South Nassau Dermatology is a key option offering both medical and cosmetic skin care and Mohs surgery. For precise providers, schedules, and which physician specializes in your condition, check the Levittown/Long Beach office pages on snderm.com or call the clinic.

Clinic Type

Dermatology

Address

Levittown, Long Island; Oceanside (and other LI locations)

Phone

(516) 766-0345; (516) 520-5280; (516) 432-7124; 516-895-4799

Email

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Opening Hours

Levittown Office Hours: 516-520-5280; Oceanside Office Hours: 516-766-0345

Services Offered

  • Dermatology
  • Cosmetic Dermatology
  • Mohs Surgery
  • Botox
  • Filler Injections
  • Laser Treatments
  • Microneedling
  • Sclerotherapy & Laser Vein Therapy
  • Laser Hair Removal
  • Spider Vein Removal
  • V-Beam Pulsed Dye Laser
  • CO2 Resurfacing Laser
  • MedLite Q-Switched YAG Laser
  • Ultra Laser
  • Mosaic Laser
  • Pharos Excimer Laser

Technology & Equipment

  • Botox
  • Fillers
  • Mohs Surgery
  • Microneedling
  • Sclerotherapy
  • Laser treatments including CO2, Medlite Q-switched YAG, V-Beam PDL, Iriderm Laser, Ultra Laser, Mosaic Laser, Pharos Excimer Laser
  • Laser hair removal
  • Laser vein therapies
  • Mosaic Laser
  • KyBella
  • Juvederm
  • Radiesse (inferred from fillers context)
  • Kybella

Team

  • Dermatology team, 9 board-certified physicians and registered certified physician assistant (RCPA) — Board-certified physicians and certified physician assistants

Insurance & Payment

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Languages Spoken

  • English

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • Healthgrades: 1.0/5.0 (Long Beach office) (1 review mentioned)
  • SalonDiscover: 3.7/5.0 (Levittown office) (15 reviews mentioned)

Patients praise

  • Physicians described as knowledgeable and professional
  • Effective medical and surgical dermatological care reported by some patients
  • Clean and professional office environment mentioned by some reviewers

Common complaints

  • Rude or unprofessional front desk staff
  • Difficulty scheduling appointments or reaching the office by phone
  • Perceived long wait times or rushed physician visits
  • Complaints regarding billing practices and insurance charges
  • Reports of misdiagnosis or ineffective treatments

"Truly abysmal customer service... their reception staff couldn't be ruder or nastier. When I call... their response was 'PROBABLY NOT' [regarding availability]."

— Healthgrades review

"I have been a patient of Dr Graig Kornreich for over 5 years. Dr Kornreich is the best ever. I went to him after seeing a few dermatologist with no results."

— MapQuest review

"Expect to be billed for services that were not rendered. We found the services to be embellished."

— LocalityBiz review

Synthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].

Information sourced from the clinic's website as of July 11, 2026.

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